Improvement in machines for pressing clay fifes



A delitti CStairs @aient @pitre THOMAS SHAW, OF PHILADELPHIA, PENNSYLVANIA.

- Letters Patent No. 98,430, dated Decemberv 28, 1869.

The Schedule referred to in these Letters-Patent and making part of the same To all whom it may concern:

Be it known that I, THOMAS SHAW, of the city and county of Philadelphia, Pennsylvania, have invented a new and improved Machine for Pressing Clay Pipe; and I hereby declarethe following lto be a full,

clear, and exact description of the same, reference section through the centre of machine. y Similar letters refer to similar parts, of whichp is a bed-plate, resting upon three pillars, h, upon which rests tub b, provided with cover It.

Said cover k has an annular recess at r, and the tub b lhas a corresponding projecting rib, fitting into the saine. f

Said rib and annular recess are cut out in alternate lengths of distance, that said cover may be made fast or loose from the tub, by revolving the same slightly, when desiring to secureor loose the same.

A gum or other suitable packing-ring may intervene between the cover and tub, for the purpose of securing a tight joint.

a a are pillars, secured to base p andbeam d.

c is a hollow rod, secured to beam' d, and passes through a stuliing-box inl cover k, and through a follower, m, and has a die secured toits lower end, n.

l is a disk, held loosely in its centre by an annular recess formed in follower m, that the disk and follower may revolve independently of each other.

f are Vtwo rods, secured to said disk, and pass through stuffing-boxes in cover k, and are united at the top bymeans of a cross4bar, g,provided with a ring in its centre, to enable the hoistingof the same.

c is an inlet-pipe, communicating with hollow rod c. 'i is au outlet-aperture, all for the purpose as hereafter described.

ois a female die, for the purpose as hereafter described.

The press is operated in this Wise:

' The cover k is turned so as to be released from tub '11, when an ordinary hoisting-appliance, the rope. of

Figure 2 represents a transverse view of a verticalv which is fastened to ring g,'1iftsth e rods fand follower 'm until the follower cornes in contact-With the cover k, when that is also lifted, together with the follower, as high as the beam d will permit, atwhich time the tub b is empty, and ready for the load of clay, which is thrown in, and packed' tightly, (to the capacity of the tub,) when the follower is lowered down, and pressed upon the same, when the cover b is locked fast to the tub. At this period, steam, air, or waterpressure can be applied by connecting a pipe, conveying the same, with tube c, conveying the fluid into hollow rod c, and has exit from an aperture above the follower, at t. l

The pressure of the duid is exerted over the whole area of the follower, forcing it down, and the Vclay beneath it out at the opening at the bottomof the tub b, and around the disk u, which operation is continued until nearly all the clay is forced out ofthe tub in the shape of pipe, which is cut off in suitable lengths, at the will of the operator, by the ordinary wire cutting-appliance. e

When all the clayis forced out that is desired, the follower and cover are lifted, that the tub may. be refilledwith clay, as before described.

This apparatus is also so arranged that'the power maybe applied directly upon the clay, thus dispensing with expensive steam and hydraulic cylinders, and their cost-ly appliances, and causes the tub to act at once as steam-cylinder and tub.

It will be observed that the pressure of fluid can asA readily be applied by tapping one side ofthe upper part of the tub as through the hollow rod c, and that various shapes and sizes of dies can be placed at the bottom of the tub; and that variou's other methods can be used to secure the cover It to the tub; and that, in the-pressing of certain-sized pipe, the follower mayl be dispensed with entirely, without any alteration inl the result. to the precise shape'of the apparatus,- but v v What I do claim, and desire to secure by Letters: Patent, is-

1. lhe pipe-press herein described, consisting of the. tub b, cover" It, disk l, with rods ff, and hollow'rod c, with its inlet e and outlet t', when constructed and operated in the manner and for the purposel herein set 2. In connection with the above-named parts, the piston m, when constructed and combined with parts, as and for the purpose herein set forth.

4THOMAS SHAW.

Witnesses E. COBB, y ELIAS J. SHAW.

I therefore do not wish to confine myself 

